Linear Expressions Vocabulary

Linear Expressions Vocabulary

Important vocabulary

While learning about algebraic expressions and equations you will be hearing different vocabulary words being used. Get familiar with these words so you will understand what's being taught.

Linear Expressions Vocabulary

• expression

• equation

• variable

• coefficient

• constant

• term

Expression

• The sum of terms that are either rational numbers or the product of a rational number and a variable.

• Expressions do not have equal signs.

• An Equation has an equal sign.

Multiple Choice

expression or equation?

• equation

• expression

Terms

• a constant number, a variable, or a variable with a coefficient

• Terms of an expression are separated by + or -

Multiple Choice

How many terms does this expression have?

4x + 8 + 3x + 7

• 2

• 3

• 4

• 5

Multiple Choice

How many terms does this expression have?

3x² + 7x - 8

• 1

• 2

• 3

• 4

Coefficient

• A number multiplied by a variable in an expression

• The coefficient is "attached" to the variable

Variable

• A symbol for a value we don't know yet. It is usually a letter like x or y.

• Example: in x + 2 = 6, x is the variable

Constant

• A constant does NOT have a variable "attached" to it.

• A numerical value that does not vary (change)

Multiple Choice

In the expression:

5y + 9

The coefficient is __________.

• 5

• y

• 9

• +

Multiple Choice

In the expression:

5y + 9

The variable is __________.

• 5

• y

• 9

• +

Multiple Choice

In the expression:

5y + 9

The costant is __________.

• 5

• y

• 9

• +

Become familiar with the parts of an expression.

Multiple Choice

In the expression,

4 + 3x - 10 + 5x

How many terms are there?

• 6

• 5

• 4

• 3

Multiple Choice

In the expression,

4 + 3x - 10 + 5x

What is/are the coefficient(s)?

• 4 , -10

• 3, 5

• 4, -10, 3, 5

• +, -

Multiple Choice

In the expression,

4 + 3x - 10 + 5x

What is/are the constant(s)?

• 3, 5

• x

• 4, -10

• -10

Multiple Choice

In the expression,

4 + 3x - 10 + 5x

What is/are the variable(s)?

• +

• +, -

• 4, 3, 5 ,-10

• x